Using weak electrical currents passed into the brain through a headband may help relieve depression symptoms for some patients when combined with an antidepressant, according to a U.S. and Brazilian study.

The U.S. mental health system has huge gaps that prevent many children with psychological problems from receiving effective treatment that could prevent tragic consequences later in life, experts told U.S. lawmakers on Thursday.

The U.S. Marine Corps, known for turning out some of the military's toughest warriors, is studying how to make its troops even tougher through meditative practices, yoga-type stretching and exercises based on mindfulness.

Researchers have chosen an experimental drug by Eli Lilly & Co. for a large federally funded study testing whether it's possible to prevent Alzheimer's disease in older people at high risk of developing it.

Suicide rates in the United States have risen sharply since the economic crisis took hold in 2007 and political leaders should do more to protect Americans' mental health during tough times, researchers said on Monday.